diff --git a/cmake/ProjectBinaryen.cmake b/cmake/ProjectBinaryen.cmake
index b10d3a2bd..fd84b0705 100644
--- a/cmake/ProjectBinaryen.cmake
+++ b/cmake/ProjectBinaryen.cmake
@@ -44,7 +44,6 @@ ExternalProject_Add(binaryen
     BINARY_DIR ${binary_dir}
     URL https://github.com/WebAssembly/binaryen/archive/1.38.9.tar.gz
     URL_HASH SHA256=f8c6d4deb83dba8709c4df9f7983080ec0f9412e88899767ed2815b911ce1ebd
-    PATCH_COMMAND sh ${CMAKE_CURRENT_LIST_DIR}/patch_binaryen.sh
     CMAKE_ARGS
     -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
     -DCMAKE_BUILD_TYPE=Release
diff --git a/cmake/patch_binaryen.sh b/cmake/patch_binaryen.sh
index 9fd6e34b6..74918955a 100644
--- a/cmake/patch_binaryen.sh
+++ b/cmake/patch_binaryen.sh
@@ -1,4 +1,4 @@
 #!/bin/sh
 
 sed -iE 's/COMMAND python /COMMAND /' src/passes/CMakeLists.txt
-sed -iE 's/\#\!/usr/bin/env python/#!/usr/bin/env python2/' scripts/embedwast.py
+sed -iE 's/^#!/usr/bin/env python/#!/usr/bin/env python2/' scripts/embedwast.py